Rename app and document virtual environment setup

SUB Control/README.md

@@ -1,4 +1,4 @@
-# ArduSub Minimal Control
+# SUB Control
 
 A deliberately small, low-bandwidth MAVLink controller for bench-testing an
 ArduSub vehicle over a USB serial connection. It sends no parameter-list
@@ -33,14 +33,31 @@ the frame mixing and generates the configured ESC outputs. For ArduSub,
 
 ## Run on Windows
 
-1. Install Python 3.11 or newer.
-2. Open PowerShell in this folder and run `./run.ps1`.
+1. Install Python 3.11 or newer. A virtual environment installs packages, but
+   it does not install Python itself.
+2. Open PowerShell in this folder and run `./run.ps1` (or right-click it and
+   choose **Run with PowerShell**).
 3. Select the autopilot's COM port, then click **Connect**. Baud and control-rate
    settings are under the small `•••` link button (normally 57600 baud / 20 Hz).
 4. Confirm `ArduSub` and a live heartbeat are shown.
 5. Click **Set MANUAL**, then **ARM** only when the bench is safe.
 6. Move the controls. Once armed, no additional enable button is needed.
 
+`run.ps1` automatically creates a private `.venv` on the first run, installs
+the versions declared in `requirements.txt`, and starts SUB Control. Later runs
+reuse the same environment and update missing dependencies when necessary.
+The `.venv` directory is intentionally ignored by Git: virtual environments
+contain machine-specific executables and can be recreated from
+`requirements.txt`.
+
+## Repository layout
+
+The Gitea repository is named `argo`. `SUB Control` is a normal directory inside
+that repository containing this application. A Gitea **Project** is a planning
+board for issues and tasks; source code is not attached to a Project board.
+Git tracks the folder automatically because its files are committed on the
+repository's `main` branch.
+
 Keyboard controls for SimpleROV-3: W/S forward/back, A/D yaw left/right,
 Q/E alternative yaw control, and R/F rise/dive.
 Releasing movement keys eases their controls back to neutral.